(19)

(11)

EP 4 473 206 A1

(12)

(43) Date of publication: 11.12.2024 Bulletin 2024/50 (21) Application number: 23749307.7 (22) Date of filing: 30.01.2023

(51) International Patent Classification (IPC):  F02D 19/02(2006.01) F02M 21/02(2006.01) F02D 41/30(2006.01) (52) Cooperative Patent Classification (CPC): Y02T 10/30; F02D 2200/0602; F02D 19/0642; F02D 19/022; F02D 19/0694; F02M 43/00; F02M 43/04 (86) International application number: PCT/CA2023/050124 (87) International publication number: WO 2023/147653 (10.08.2023 Gazette 2023/32)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 01.02.2022 US 202263305673 P (71) Applicant: HPDI Technology Limited Partnership Vancouver, BC V6P 6P2 (CA)	(72) Inventors: TOUCHETTE, Alain Vancouver, British Columbia V6K 2R3 (CA) ZELLER, Kory Vancouver, British Columbia V5N 4A2 (CA) (74) Representative: FRKelly  Waterways House Grand Canal Quay Dublin D02 PD39 Dublin D02 PD39 (IE)